30222143 has 4 divisors (see below), whose sum is σ = 34539600. Its totient is φ = 25904688.

The previous prime is 30222133. The next prime is 30222149. The reversal of 30222143 is 34122203.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 30222143 - 2⁸ = 30221887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (30222149) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2158718 + ... + 2158731.

It is an arithmetic number, because the mean of its divisors is an integer number (8634900).

Almost surely, 2^30222143 is an apocalyptic number.

30222143 is a deficient number, since it is larger than the sum of its proper divisors (4317457).

30222143 is an equidigital number, since it uses as much as digits as its factorization.

30222143 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4317456.

The product of its (nonzero) digits is 288, while the sum is 17.

The square root of 30222143 is about 5497.4669621563. The cubic root of 30222143 is about 311.4883097193.

Adding to 30222143 its reverse (34122203), we get a palindrome (64344346).

The spelling of 30222143 in words is "thirty million, two hundred twenty-two thousand, one hundred forty-three".